Effects of Entropic Wave in Vibroacoustic Problem Using Boundary Element Analysis

被引：0
作者：
Chafik Karra
Mabrouk Ben Tahar
机构：
[1] Institut Préparatoire aux Etudes d’Ingénieurs de Sfax,Laboratoire Roberval
[2] Laboratoire des Systèmes ElectroMécaniques (LASEM),undefined
[3] Université de Technologie de Compiègne,undefined
来源：
Flow, Turbulence and Combustion | 2005年 / 74卷
关键词：
visco-thermal fluid; acoustic propagation; integral equations; variational formulation; boundary element;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A variational formulation for a vibroacoustic problem of a membrane and a viscothermal fluid is investigated in this paper. The formulation combines a variational formulation by integral equations of the fluid, that takes into account the acoustic and entropic waves coupling, with a variational formulation of the membrane. The formulation has been implemented numerically for the problems with axisymmetric geometry. The numerical results are compared to the analytical solution for a circular membrane coupled to a cylindrical cavity filled with air. These results show the validity of numerical implementation and illustrate the thermal effects of air on the membrane-cavity system modes in the micro cavities’ cases.
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页码：49 / 66
页数：17
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